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测定钙常用的方法有:重量法,高锰酸钾容量法,络合滴定法,原于吸收法和比色法等。这些方法中有的操作手续麻烦,有的仪器昂贵。近年来发展了离子选择性电极法,这类方法仪器较简单,操作方便,快速。用钙离子选择电极测定钙已有不少工作,该法在应用中对于干扰离子,如Fe~(3+)离子等,当含量少时可用络合剂掩蔽。但大量铁离子
Common methods for the determination of calcium are: gravimetric method, potassium permanganate capacity method, complexometric titration, the original method of absorption and colorimetry. Some of these methods are troublesome and others are expensive. In recent years, the development of ion selective electrode method, this method instrument is simple, easy to operate, fast. Determination of calcium with calcium ion selective electrode has been a lot of work, the law in the application of interfering ions, such as Fe ~ (3 +) ions, when the content can be used when complexing agent masking. But a lot of iron ions